CyberCVE

CVE-2024-20321

A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an

Severity
High 8.6
CVSS 3.1
Exploited
Not listed
EPSS
0.007
50.0th percentile
Discovered by
Vendor
Published by the vendor
Published
Feb 28, 2024
Assigned by cisco

Description

A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network.

Weakness: CWE-400

Affected products

Vendor Product Category Matched by
Cisco Cisco NX-OS Software Routing & Switching cna-assigner
Vendor-reported affected versions (2)
  • Cisco · Cisco NX-OS Software
  • cisco · nx-os

References